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2020-06-04 13:16
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Aluminum Heating Element for Cordless Soldering Iron
Aluminum Ceramic heating elements were developed based on ceramic lamination technologies, which are mainly used for automotive and various industrial applications such as soldering iron, kerosene & gas equipment, pellet burner and water heating.
Process of Ceramic Element
First, painting the high melting point metal (tungsten or molybdenum manganese) paste on to the Al2O3 casting briquette in coordinate to the circuit design, then another layer of sintering additives. After that, repeating the process to build multiple layers. Then, they are sintered together under 1600 °C hydrogen gas environment. Finally, nickel leads are brazed at 800 °C onto the metal end and put on with Teflon sleeve, which make it a MCH heating element.
Internal Heating elements are protected from oxidation due to sintering into one-piece ceramic body structure.
Material Properties of 95% Al2O3 Alumina ceramic
Item |
Inspection Condition |
Unit |
Standard |
Color |
White |
||
Density |
g/cm3 |
3.7 |
|
Water absorption |
% |
0 |
|
Average grain size |
μm |
3～5 |
|
Hardness |
Load 4.9N |
GPa |
≥15 |
Flexural strength |
MPa |
≥274 |
|
Linear expansion coefficient |
20～500℃ |
1×10-6mm/℃ |
6.5～7.5 |
20～800℃ |
6.5～8.0 |
||
Thermal conductivity |
20℃ |
W/(m·K) |
≥20.9 |
Specific heat |
kJ/(kg·K) |
≥0.8 |
|
Insulation strength |
KV/mm |
≥12 |
|
Volume resistivity |
20℃ |
Ohm.cm |
≥1014 |
300℃ |
≥1011 |
||
500℃ |
≥109 |
||
Permittivity |
1MHz |
9～10 |
|
Dielectric loss tangent |
1MHz |
≤3×10-4 |
|
Surface roughness |
μm |
0.3～0.8 |
Features
It is a new type of high efficient heating elements, which can save more than 20%-30% power effect compare to PTC ceramic heaters. Our alumina ceramic heaters have many excellent features:
1. High power density, excellent thermal efficiency
2. Rapid heating, non-hot spot temperature distribution
3. High temperature, small size, light weight
Parameter
Heater Name |
Heating Element for cordless soldering Iron |
Working Voltage |
12V |
Working Power |
15W~90W |
Dimension |
Length 60mm* diameter 3.8mm or Customization |
Leads |
Nickel wires |
Working Temperature |
400~500 ℃ |
Insulation Sleeve |
Accordingly |
Application
Electronic cigarette, vaporizers, coffee machine, Intelligent toilet, instant electric kettle, instant water heater, intelligent basin faucet; hair straightener, hair curler,
car exhaust oxide sensor, heating for industry device, ultrasonic heating element, mold heater, medical equipment heater, air heater, small household appliances, etc......
http://www.ceramicheatingchina.com/
